Question

10. (a) The surface area and volume of a sphere are in the ratio of 3: 7 cm what is the circumference o its great circle and volume? find it ​

Answer 1

Explanation:

let r be the radius of sphere.

surface area=4πr²

`volume=(4)/(3) \pi r^3\\(surface~area)/(volume) =(4\pi r^2)/((4)/(3) \pi r^3) =(3)/(r) =(3)/(7)\\r=7\\circumferece~of~greater~circle=2\pi r=2 * \pi * 7=14\pi`